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37 results about "Covalent functionalization" patented technology
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Covalent functionalization graphene and preparation method thereof
The invention discloses covalent functionalization graphene and a preparation method thereof. The preparation method of the covalent functionalization graphene comprises the following steps of: adding 1 part by weight of graphene oxide and 0.1-100 parts by weight of azido substances to a reactor; reacting for 0.1-72 hours in a hot bath at 100-220 DEG C; filtering, centrifugalizing, and washing to obtain the covalent functionalization graphene. In the invention, the graphene oxide is used as a raw material to directly react with an azido compound to prepare a covalently-modified functionalization graphene material based on nitrene chemistry by adopting a one-step method. The preparation method has simple and convenient method, simple process and large-scale production, is a general method and can enable multiple functional groups (such as hydroxyl, carboxyl, amino, bromo and long alkyl group) and high polymers (such as polyethylene glycol and polystyrene) to be covalently connected to the graphene. The obtained covalent functionalization graphene has good solvent dispersity and conductivity, and can be processed in a solvent and widely used in the fields of micro-nano electron, machinery, chemical engineering, high performance materials, and the like.
Owner:ZHEJIANG UNIV
Preparation method and application of graphene oxide/silicon dioxide/polyaniline composite material
The invention belongs to the cross field of an organic / inorganic nanometer compound and a functional high-molecular material, and provides a preparation method and application of a graphene oxide / silicon dioxide / polyaniline composite material, aiming at solving the problems that the effect of promoting the property of a polymer and final using effect are influenced by reducing the self mechanical strength, electricity-conducting property, heat-conducting property and the like of graphene oxide due to the structural change of a carbon atom contained in graphene oxide. The graphene oxide / silicon dioxide / polyaniline composite material comprises the following three components in percentage by mass: 5%-90% of graphene oxide, 5%-90% of silicon dioxide and 5%-90% of polyaniline. According to the preparation method provided by the invention, the technical problem that graphene oxide prepared through the traditional covalent functionalization method is not high in property when used as a filler is solved by modifying graphene oxide through non-covalent functionalization effect.
Owner:HANGZHOU NORMAL UNIVERSITY
Graphene-containing ionic liquid nanometer composite lubricating membrane
ActiveCN102533406AImprove electrostatic adsorption capacityImprove bindingAdditivesTetrafluoroborateAcetone
The invention discloses a graphene-containing ionic liquid nanometer composite lubricating membrane. The graphene-containing ionic liquid nanometer composite lubricating membrane is prepared by the steps of carrying out non-covalent functionalization treatment to graphene through 1-butyl-3-methylimidazolium chloride ionic liquid so as to disperse the obtained graphene in water and an organic solvent stably, mixing and dispersing graphene and 1-octyl-3-methylimidazolium hexafluorophosphate ionic liquid in acetone, and preparing the graphene-containing ionic liquid nanometer composite lubricating membrane from the dispersion liquid through a static absorption manner finally. The nanometer composite lubricating membrane both has high micro-friction bearing capacity of the graphene and low micrometer / nanometer friction coefficient of the ionic liquid, and can be used for solving lubricating problems of micro-components such as MEMS (Micro-electromechanical System) and the like.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Chitosan functionalized graphene oxide/polyvinylidene fluoride hybrid ultrafiltration membrane and preparation method thereof
InactiveCN105903359AGood dispersionImprove performanceMembranesUltrafiltrationUltrafiltrationFunctionalized graphene
The invention provides a chitosan functionalized graphene oxide / polyvinylidene fluoride hybrid ultrafiltration membrane and a preparation method thereof. Firstly, chitosan is used for covalent functionalization of graphene oxide to prepare chitosan-graphene oxide; the chitosan-graphene oxide is dispersed in an organic solvent in an ultrasonic mode, then polyvinylidene fluoride and a pore-foaming agent are added and stirred at certain temperature to be evenly dissolved to obtain a membrane casting solution, water serves as a coagulating bath, and the chitosan-graphene oxide / polyvinylidene fluoride hybrid ultrafiltration membrane is prepared through the immerged phase-inversion process. The chitosan-graphene oxide / polyvinylidene fluoride hybrid ultrafiltration membrane prepared through the method improves dispersibility of graphene oxide in a membrane matrix, and compared with a graphene oxide / polyvinylidene fluoride ultrafiltration membrane, hydrophilicity, water flux, antifouling property and other aspects are greatly improved.
Owner:NORTHWEST UNIV(CN)
Tin-porphyrin axial covalent functionalization multiwalled-carbon-nanotube nonlinear optical material and preparing method thereof
InactiveCN105348291AImprove solubilityImprove dispersion stabilityOrganic chemistry methodsNon-linear opticsDispersion stabilitySolubility
The invention belongs to the field of war-industry high-power-laser protective materials, and particularly relates to an organic-transition-metal tin-porphyrin axial covalent functionalization multiwalled-carbon-nanotube nano-hybrided nonlinear optical function material with good nonlinear absorption performance and a preparing method thereof. According to the material and the preparing method, organic-transition-metal tin porphyrin is axially connected to the surfaces of multiwalled carbon nanotubes in a covalent bond mode through 1,3-dipole cycloaddition; due to the synergistic effect between the tin porphyrin and the multiwalled carbon nanotubes, the solubility, the dispersion stability and the nonlinear optical absorption performance of the multiwalled carbon nanotubes are improved, and the scheme is not simple physical mixing of the two different optical function materials. The prepared nonlinear optical function material has quite good solubility and quite good dispersion stability in organic polar solvents, and has quite high nonlinear optical absorption performance, and therefore the organic-inorganic nano-hybrided nonlinear optical function material shows important scientific research value and good practical application prospects.
Owner:JIANGSU UNIV
Stannum porphyrin axial covalent functionalized reduced graphene oxide nonlinear optical materials, and preparation method thereof
InactiveCN105254640APromote absorptionImprove solubilityOrganic chemistry methodsNon-linear opticsSolubilityDispersion stability
The invention belongs to the field of military industry strong laser protective material, and more specifically discloses organic transition metal stannum porphyrin axial functionalized reduced graphene oxide nano hybrid light-sensitive functional materials with excellent nonlinear absorption performance, and a preparation method of the organic-inorganic covalent functionalized nano materials. Development of the novel porphyrin covalent graphene nonlinear absorption materials with excellent solubility is used for solving problems that graphene is poor in solubility and dispersion stability, and conventional strong laser protective materials are limited. According to the preparation method, organic transition metal stannum porphyrin is connected with the surface of reduced graphene oxide via covalent axial bonds via 1,3-dipolar cycloaddition and free radical addition instead of simple physical mixing of two materials with different optical functions; solubility, dispersion stability, and nonlinear absorption performance of graphene are improved via synergistic effects of organic transition metal stannum porphyrin with reduced graphene oxide; nonlinear optical performance and solubility of the obtained materials are improved greatly; and application prospect is promising.
Owner:JIANGSU UNIV
Method for preparing glassy carbon electrode modified by noncovalent-functionalized graphene and ionic liquid compound
InactiveCN104458849AWide linear rangeLow detection limitMaterial electrochemical variablesElectrochemical responseBiocompatibility Testing
The invention provides a method for preparing a glassy carbon electrode modified by a noncovalent-functionalized graphene and ionic liquid compound. The method comprises the following steps: firstly, noncovalently functionalizing graphene with dodecyl benzene, then combining the functionalized graphene with a chitosan polymer under electrostatic interaction, and finally adding ionic liquid to form a composite material, wherein chitosan can prevent the precipitation of a surfactant caused by direct contact of ionic liquid salt and the surfactant, and the composite material has a good microenvironment due to good electrical conductivity and biocompatibility of the ionic liquid; dispensing the composite material on the surface of a glassy carbon electrode to obtain the modified glassy carbon electrode. The modified glassy carbon electrode has a good electrochemical response on tyrosine, can be used for directly detecting tyrosine, and has the characteristics of being wide in linearity range and low in limit of detection.
Owner:NORTHWEST NORMAL UNIVERSITY
Two-dimensional black phosphorus photoelectrochemical electrode based on DNA modification, preparation method and application
ActiveCN111579611AEasy to oxidizeImprove overall lifespanBiological testingMaterial electrochemical variablesBenzoic acidBlack phosphorus
The invention belongs to the technical field of photoelectrochemical biosensors, and discloses a two-dimensional black phosphorus photoelectrochemical electrode based on DNA modification, a preparation method and an application. 4-azidobenzoic acid is modified on a surface of black phosphorus in a covalent bond functionalization mode, and a 4-AB-BP thin film is deposited on a surface of the ITO electrode through a dropwise coating method; and sulfo-NHS / EDC condensation on an amino group connected with a 5'end of ligand and a carboxyl group of benzoic acid is carried out to prepare aptamer covalent functionalized modified black phosphorus ITO, and a molar ratio of black phosphorus to 4-azidobenzoic acid is 1: 6. The method is advantaged in that the covalent functionalized black phosphorus is applied to a photoelectrochemical biosensor for the first time, compared with an existing black phosphorus biosensor, the 4-azidobenzoic acid is used for modification, the service life of the blackphosphorus can be prolonged, the aptamer is bonded to the black phosphorus through the covalent bond, the service life of the black phosphorus modified ITO electrode is prolonged, and sensitivity of the black phosphorus modified ITO electrode is improved.
Owner:CHONGQING TECH & BUSINESS UNIV
Triple molten porphyrin dimer covalent functionalized single-walled carbon nanotube nonlinear nano hybrid material and preparation method thereof
ActiveCN112094277AEasy to retouchEasy to operateOrganic chemistryOther chemical processesDimerPorphyrin
The invention relates to a triple molten porphyrin dimer covalent functionalized single-walled carbon nanotube non-linear nano hybrid material and a preparation method thereof. The non-linear nano hybrid material is formed by connecting a triple molten porphyrin dimer TFP to the surface of SWCNT through covalent bonds. Compared with the prior art, the organic-inorganic covalent functionalized nanofunctional material is prepared by connecting TFP to the surface of SWCNT through covalent bonds and the azo salt free radical addition reaction instead of simply and physically mixing the two different optical functional materials, and compared with a traditional material, the prepared material not only has enhanced nonlinear optical properties in the nanosecond visible light field, but also canconvert saturated absorption of a traditional material into anti-saturated absorption in the femtosecond near-infrared field, and has a very wide application prospect.
Owner:TONGJI UNIV
Covalent functionalization of carbon nanotubes grown on a surface
InactiveUS20150210549A1Reduces/eliminates riskSimpler for functionalizationMaterial nanotechnologyOrganic chemistryMaterials scienceCovalent functionalization
Owner:JOHANSSON ROLF AG +1
Vinyl sulfone-based silicon nano material surface functionalization method
The invention discloses a vinyl sulfone-based silicon nano material surface functionalization method which comprises the step: enabling a vinyl sulfone derivative to directly react with silicon hydroxyl on the surface of a material under a catalysis condition, thereby achieving covalent functionalization of a silicon-based material. By adopting the method, functionalization of multiple silicon nano materials can be achieved, and the method is wide in substrate application range; the material does not need to be pretreated, and the method is high in operability and high in reproducibility; themethod is gentle in reaction condition, simple to operate and good in environment protection; a single-layer function surface can be generated, and high reaction controllability can be achieved; and the method is a broad spectrum silicon nano material surface functionalization method with great potential.
Owner:DALIAN UNIV OF TECH
Method for preparing modified boron nitride nanosheets by water-phase shearing method
InactiveCN110921638AReduce the number of layersIncrease productionNitrogen compoundsFreeze-dryingActive agent
The invention discloses a method for preparing modified boron nitride nanosheets by a water-phase shearing method, and belongs to the technical field of preparation of two-dimensional nano materials.Layered h-BN is dispersed into an aqueous solution, a surfactant is added to stably disperse the h-BN, the h-BN is sheared and stripped in a shear type reactor to obtain OH-BNNSs with the layer numbersmaller than 10, and high-speed centrifugation, suction filtration and freeze drying are carried out to obtain OH-BNNSs powder. The prepared OH-BNNSs are few in layer number and high in yield, covalent functionalization occurs in the stripping process, hydroxyl is generated, and the stability and dispersity of the OH-BNNSs in a polar solution are further improved. The method provided by the invention has the advantages of controllable stripping process, high efficiency, simple operation and low cost, and has an industrial application prospect.
Owner:BEIJING UNIV OF CHEM TECH
Preparation method of electronic ammonia gas sensor based on non-covalent monatomic layer graphene
InactiveCN112034014AControl electrical performanceMultiple technical parametersMaterial resistanceGraphiteField-effect transistor
The invention relates to a preparation method of an electronic ammonia gas sensor based on non-covalent monatomic layer graphene, which comprises the following steps: (1) preparing graphene into a graphene belt, wherein a substrate of the graphene is provided with a gate electrode, and the graphene belt is used as a channel; then preparing a source electrode and a drain electrode on the graphene belt to obtain a graphene device with a field effect transistor structure; (2) dissolving BP2T powder into methylbenzene to obtain a BP2T molecular solution; and (3) immersing the graphene device withthe field effect transistor structure in the BP2T molecular solution, carrying out non-covalent functionalization treatment, taking out the graphene device, washing the graphene device with toluene, and blow-drying the graphene device to obtain the electronic ammonia gas sensor. The method is simple, the prepared electronic ammonia gas sensor has good selectivity and high ppb grade sensitivity toammonia gas, meanwhile, the recovery process is very simple, the sensor can automatically recover to the initial state after ammonia gas detection is stopped, the sensitivity is high, and the practicability is high.
Owner:SHANDONG UNIV
Composite coating containing cardanol-based reactive diluent modified graphene oxide filler as well as preparation method and application of composite coating
ActiveCN114316745AGood dispersionGood compatibilityAnti-corrosive paintsEpoxy resin coatingsResin matrixFirming agent
Owner:NANJING UNIV OF TECH
Preparation method and application of high-activity functionalized graphene capable of adsorbing fungaltoxin
ActiveCN106215858AInhibit aggregationImprove adsorption capacityOther chemical processesFood scienceIon exchangeFunctional modification
The invention discloses a preparation method of high-activity functionalized graphene capable of adsorbing fungaltoxin. Graphene oxide dispersion liquid of a single-layer or multi-layer structure and surfactant are mixed, then, a mixture is subjected to forth ultrasonic processing and is stirred for 24 to 48h at room temperature to obtain even mixed liquor, and the mixed liquor is stirred at the temperature of 70 to 95DEG C for 6 to 10h to obtain the functionalized graphene. The graphene oxide is taken as a raw material, amphipathy surfactant is used as modifier, the graphene is subjected to covalence functional modification through ion exchange and amidation reaction, the functionalized graphene with good soluble dispersion capacity is obtained, and the adsorption performance of the functionalized graphene is improved. The functionalized graphene has an outstanding adsorption effect on the fungaltoxin, and has high practical value and good application prospect.
Owner:ACAD OF NAT FOOD & STRATEGIC RESERVES ADMINISTRATION
Method for inhibiting oxidation of MXene nano material and application of MXene nano material in anticorrosive paint
ActiveCN114854237AImprove oxidationGuaranteed chemical stabilityAnti-corrosive paintsPolymer coatingsGraphite
The invention relates to an anti-corrosion nano-filler, in particular to a method for inhibiting oxidation of an MXene nano-material and application of an obtained stable material serving as the anti-corrosion nano-filler in a polymer coating. A protective layer is formed on the surface of the MXene nanosheet, so that the complete two-dimensional sheet structure of the MXene nanomaterial is maintained, and oxidation is inhibited. The obtained non-oxidation MXene nanosheet with a defect-free and sheet-shaped structure is used as an anti-corrosion nano filler in a polymer coating so as to develop a long-term anti-corrosion coating on a metal structure. Therefore, oxidation of the MXene nanosheets is inhibited through covalent functionalization with alkoxy silane or hybridization with the graphene-based nanomaterial, and meanwhile, the dispersion quality of the MXene nanosheets in a polymer matrix is improved. The modified MXene-based nanosheet is used as a nanofiller in a polymer coating, and can exert long-acting corrosion resistance in a polymer matrix.
Owner:INST OF OCEANOLOGY - CHINESE ACAD OF SCI
Tetraphenylporphyrin covalently functionalized titanium disulfide nonlinear nano hybrid material and preparation thereof
ActiveCN113735866AExtend modifiabilityRich preparation methodOrganic chemistry methodsPhotovoltaic energy generationTitanium disulfideNano hybrid
The invention relates to a tetraphenylporphyrin covalent functionalized titanium disulfide nonlinear nano hybrid material and preparation thereof, the hybrid material is obtained by a free radical addition reaction of tetraphenylporphyrin diazonium salt TPP-N2 + BF4-and sulfur atoms on the surface layer of a titanium disulfide nanosheet, and the hybrid material is a first example about the covalent functionalization of the titanium disulfide nanosheet at present. Compared with a hybrid material obtained by simply and physically mixing the two types of optical functional materials, the hybrid material obtained by bonding carbon-sulfur covalent bonds shows a remarkably enhanced saturated absorption phenomenon in a visible light range. According to the invention, chemical modification methods of titanium disulfide are enriched, and the obtained material has a wide application prospect in the photoelectric fields of nonlinear optical devices and the like.
Owner:TONGJI UNIV
Preparation method and application of biosensor based on chemical resistance for construction site
PendingCN113588742ACraft shortReliable workmanshipMaterial electrochemical variablesElectron bunchesGraphite oxide
The invention discloses a preparation method and application of a biosensor based on chemical resistance for a construction site, and belongs to the field of water environment detection. The method comprises the following steps: S1, preparing an electrode: printing the electrode on a substrate by using a standard photoetching technology, and then evaporating and depositing Cr / Au of 20nm / 180nm by using an electron beam; S2, cleaning the Si / SiO2 electrode: carrying out acetone ultrasonic pretreatment and N2 cleaning on the exposed Si / SiO2 electrode, so that the SiO2 surface is hydrophilic; S3, functionalizing an rGO device: carrying out non-covalent functionalization on the reduced graphene oxide electrode and saccharides through connecting molecules; and S4, modifying the rGO device by using agglutinin: modifying the rGO device by using the conA agglutinin, wherein the rGO device functionalization program needs to be followed. The method is rapid, simple and reliable, and a detection platform is used for detecting interaction of the whole-cell bacterial agglutinin-carbohydrate in the water environment. The method can be used to distinguish bacterial from viral infections, and sort antibiotics according to curative effects.
Owner:CHINA MCC17 GRP
Polytetrafluoroethylene lip sheet material for sealing element and processing technology of polytetrafluoroethylene lip sheet material
PendingCN114316486ANo severe wear and tearNo sticky phenomenonElectron bunchesPolytetrafluoroethylene
According to the polytetrafluoroethylene lip piece material for the sealing element and the processing technology of the polytetrafluoroethylene lip piece material, the added components and the technology are limited, the sealing performance of the lip piece material is greatly improved, the friction performance of the lip piece material is reduced, and the phenomena of severe abrasion and sticking burning cannot be generated on a product and a mating plate at the running speed of 60 m / s; polybenzoate and polyimide are selected to improve the wear resistance of polytetrafluoroethylene, synergistically enhance the mechanical strength of the lip sheet material and improve the following property of the oil seal; the method comprises the following steps: carrying out modification treatment on polytetrafluoroethylene by using aromatic polyamide fibers by using an electron beam irradiation modification method, and grafting side branches on double helix chains of the polytetrafluoroethylene; the prepared molybdenum disulfide has covalent functionalization; nano zinc oxide and ethylene bis stearamide are introduced; the prepared composite material needs to be placed for 3-5 days and then pressed, segmented sintering is adopted in the sintering process, the service life of the lip piece material is greatly prolonged, and the service life of the lip piece material prepared according to the method is longer than 8 years.
Owner:JIANGMEN GELEIYATE FLUID SEALING TECH CO LTD
Functionalized magnetic nanoparticles and a method for preparation thereof
ActiveUS20180268972A1Considerable energy savingPromote regenerationSemi-permeable membranesMembranesCarbon coatingMagnetite Nanoparticles
The present disclosure relates to a method for manufacturing a covalently functionalized coated magnetic nanoparticle and to said particles and uses thereof. The preparation method includes forming a shell of a hydrophilic polymer coating layer on top of a magnetic metal core coated with a carbon coating. In the method a particle comprising a magnetic metal core coated with a carbon coating is provided. The surface of the particle is subjected to covalent functionalization by generating amino reactive groups via diazonium chemistry and subsequently an irreversible attachment of an atom transfer radical polymerization (ATRP) initiator is carried out on said surface. A hydrophilic polymer layer is formed) by a surface initiated atom transfer radical polymerization (SI-ATRP) reaction with a monomer comprising N-isopropylacrylamide (NIPAM).
Owner:KEMIRA OY
Preparation method of imidazole type dinitrile amine salt ionic liquid functionalized graphene supported platinum catalyst
ActiveCN111710881ACell electrodesOrganic-compounds/hydrides/coordination-complexes catalystsPtru catalystIonic liquid
The present invention adopts a one-pot room-temperature reduction method to prepare an imidazole type dinitrile amine salt ionic liquid functionalized graphene supported platinum catalyst with excellent electro-catalytic performance. The method is characterized by selecting the reduced graphene oxide (rGO) with large specific surface area and better electrochemical performance as a carrier; through non-covalent functionalization, giving the more excellent conductivity to the reduced graphene oxide (rGO), and taking chloroplatinic acid as a platinum source and taking sodium borohydride as a reducing agent to prepare the imidazole type dinitrile amine salt ionic liquid functionalized graphene supported platinum catalyst. The prepared catalyst has good methanol oxidation electrocatalytic activity, carbon monoxide poisoning resistance and stability, so that the method has certain reference significance for the development, research and application of a direct methanol fuel cell anode catalyst.
Owner:XINJIANG UNIVERSITY
High-brightness nanodot fluorophores by covalent functionalization
PendingCN113892026ADiagnostics using spectroscopyDiagnostics using fluorescence emissionNanodotFluorophore
A example compound according to the present disclosure includes, among other possible things, a nanodot carrier, a moiety, and a linker having first and second functional groups, wherein the first functional group is covalently linked to the nanodot carrier, and the second functional group is covalently linked to the moiety. An example method of making a nanodot carrier is also disclosed.
Owner:MICHIGAN TECHNOLOGICAL UNIVERSITY
Functionalized magnetic nanoparticles and a method for preparation thereof
ActiveUS10726981B2Promote regenerationEfficient separationSemi-permeable membranesMembranesCarbon coatingPolymer science
The present disclosure relates to a method for manufacturing a covalently functionalized coated magnetic nanoparticle and to said particles and uses thereof. The preparation method includes forming a shell of a hydrophilic polymer coating layer on top of a magnetic metal core coated with a carbon coating. In the method a particle comprising a magnetic metal core coated with a carbon coating is provided. The surface of the particle is subjected to covalent functionalization by generating amino reactive groups via diazonium chemistry and subsequently an irreversible attachment of an atom transfer radical polymerization (ATRP) initiator is carried out on said surface. A hydrophilic polymer layer is formed) by a surface initiated atom transfer radical polymerization (SI-ATRP) reaction with a monomer comprising N-isopropylacrylamide (NIPAM).
Owner:KEMIRA OY
Graphene-containing ionic liquid nanometer composite lubricating membrane
ActiveCN102533406BImprove electrostatic adsorption capacityImprove bindingAdditivesTetrafluoroborateAcetone
The invention discloses a graphene-containing ionic liquid nanometer composite lubricating membrane. The graphene-containing ionic liquid nanometer composite lubricating membrane is prepared by the steps of carrying out non-covalent functionalization treatment to graphene through 1-butyl-3-methylimidazolium chloride ionic liquid so as to disperse the obtained graphene in water and an organic solvent stably, mixing and dispersing graphene and 1-octyl-3-methylimidazolium hexafluorophosphate ionic liquid in acetone, and preparing the graphene-containing ionic liquid nanometer composite lubricating membrane from the dispersion liquid through a static absorption manner finally. The nanometer composite lubricating membrane both has high micro-friction bearing capacity of the graphene and low micrometer / nanometer friction coefficient of the ionic liquid, and can be used for solving lubricating problems of micro-components such as MEMS (Micro-electromechanical System) and the like.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Preparation method and application of a highly active functionalized graphene capable of adsorbing mycotoxins
ActiveCN106215858BGood solubility and dispersibilityImprove adsorption capacityOther chemical processesFood scienceActive agentIon exchange
Owner:ACAD OF NAT FOOD & STRATEGIC RESERVES ADMINISTRATION
Tin porphyrin axially covalently functionalized multi-walled carbon nanotube nonlinear optical material and preparation method thereof
InactiveCN105348291BImprove solubilityImprove dispersion stabilityOrganic chemistry methodsNon-linear opticsDispersion stabilityNonlinear absorption
Owner:JIANGSU UNIV
Surface functionalization of silicon nanomaterials based on vinylsulfone
The invention discloses a vinyl sulfone-based silicon nano material surface functionalization method which comprises the step: enabling a vinyl sulfone derivative to directly react with silicon hydroxyl on the surface of a material under a catalysis condition, thereby achieving covalent functionalization of a silicon-based material. By adopting the method, functionalization of multiple silicon nano materials can be achieved, and the method is wide in substrate application range; the material does not need to be pretreated, and the method is high in operability and high in reproducibility; themethod is gentle in reaction condition, simple to operate and good in environment protection; a single-layer function surface can be generated, and high reaction controllability can be achieved; and the method is a broad spectrum silicon nano material surface functionalization method with great potential.
Owner:DALIAN UNIV OF TECH
Cationic porphyrin functionalized Ti3C2Tx nanosheet nonlinear nano hybrid material as well as preparation and application thereof
ActiveCN113773835AStrong Broadband Linear AbsorptionPromote absorptionLuminescent compositionsPhotovoltaic energy generationPorphyrinNano hybrid
The invention relates to a cationic porphyrin functionalized Ti3C2Tx nanosheet nonlinear nano hybrid material as well as preparation and an application thereof. The nonlinear nano hybrid material is formed by adsorbing cationic porphyrin TMPyP on the surface of Ti3C2Tx through electrostatic interaction. Compared with the prior art, TMPyP is adsorbed on the surface of Ti3C2Tx through electrostatic interaction, the organic-inorganic covalent functionalized nano functional material is prepared, and compared with a traditional material, the prepared material has enhanced nonlinear optical performance in the fields of nanosecond visible light and near infrared and has very wide application prospects.
Owner:TONGJI UNIV
Porphyrin covalent functionalized Ti3C2Tx nanosheet nonlinear nano hybrid material as well as preparation and application of porphyrin covalently functionalized Ti3C2Tx nanosheet nonlinear nano hybrid material
PendingCN113831350AStrong Broadband Linear AbsorptionPromote absorptionOrganic chemistryOther chemical processesNanosecondNano hybrid
The invention relates to a porphyrin covalent functionalized Ti3C2Tx nanosheet nonlinear nano hybrid material as well as preparation and application thereof. The nonlinear nano hybrid material is formed by connecting tetraphenyl porphyrin TPP to the surface of Ti3C2Tx through covalent bonds. Compared with the prior art, a TPP covalent bond is connected to the surface of Ti3C2Tx through a diazotization reaction, the organic-inorganic covalent functionalized nano functional material is prepared, the two different optical functional materials are not simply and physically mixed, and compared with a traditional material, the prepared material has enhanced nonlinear optical performance in the nanosecond visible light and near-infrared fields, and has a very wide application prospect.
Owner:TONGJI UNIV
A kind of preparation method and application of graphene oxide/silicon dioxide/polyaniline composite material
The invention belongs to the cross field of an organic / inorganic nanometer compound and a functional high-molecular material, and provides a preparation method and application of a graphene oxide / silicon dioxide / polyaniline composite material, aiming at solving the problems that the effect of promoting the property of a polymer and final using effect are influenced by reducing the self mechanical strength, electricity-conducting property, heat-conducting property and the like of graphene oxide due to the structural change of a carbon atom contained in graphene oxide. The graphene oxide / silicon dioxide / polyaniline composite material comprises the following three components in percentage by mass: 5%-90% of graphene oxide, 5%-90% of silicon dioxide and 5%-90% of polyaniline. According to the preparation method provided by the invention, the technical problem that graphene oxide prepared through the traditional covalent functionalization method is not high in property when used as a filler is solved by modifying graphene oxide through non-covalent functionalization effect.
Owner:HANGZHOU NORMAL UNIVERSITY
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